Some operators mistake what is actually their inadequate receiver circuits as “splatter”. Genuine splatter that causes annoying interference on the band is very rare. What is more regular is operators assuming that the products they are hearing is splatter. It’s probably not.
For years, I ran an FT1000MP at home and I would curse under my breath, those stations that slid up to me in a contest, just a kHz away and started calling CQ, particularly the 80m activity nights. I would hear that typical crackle and scratching sound which was louder than the station I was in QSO with. I would bail-out and find another frequency. I couldn’t believe these stations had the staying power to stick next to me since clearly they would be receiving the same crackle from me – as I did from them. Or did they? Something was odd.